Fill in the gaps in the following table, assuming each column represents a neutral atom. Symbol 79 Br Protons 25 82 Neutrons 30 64 Electrons 48 86 Mass no. 222 207 Complete the third row of the table.

Identify the given information for each column: the number of protons, neutrons, electrons, and mass number.. Recall that the number of protons in a neutral atom is equal to the number of electrons.. Use the mass number formula: Mass Number = Protons + Neutrons, to find the missing values.. For the third column, calculate the number of protons by subtracting the number of neutrons from the mass number.. Since the atom is neutral, the number of electrons will be equal to the number of protons calculated in the previous step.>

Fill in the gaps in the following table, assuming each column represents a neutral atom. Symbol 79 Br Protons 25 82 Neutrons 30 64 Electrons 48 86 Mass no. 222 207 Complete the third row of the table.

Hi everyone here we have a question asking us to consider the following table showing symbols, the number of protons, electrons and neutrons and the mass number. Each column represents a neutral atom and our goal is to fill in the third column of this table. So one key aspect here is that it represents a neutral atom, which means the number of electrons is going to equal the number of protons. So we know we have 50 electrons, which means we will also have 50 protons. And our protons is the same as our atomic number. So if we look on the periodic table for the atomic number 50, we see that it is 10. And to find the mass number, the mass number equals the number of protons plus the number of neutrons, Which in this case is plus 50 Which equals 118. So our mass number is 118 And we will have a 118 above the 10 symbol. So that is our final answer. Thank you for watching. Bye.

Ch.2 - Atoms, Molecules, and Ions

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Brown 15th Edition

Ch.2 - Atoms, Molecules, and Ions

Problem 29c

Chapter 2, Problem 29c

Fill in the gaps in the following table, assuming each column represents a neutral atom.
Symbol ⁷⁹Br
Protons 25 82
Neutrons 30 64
Electrons 48 86
Mass no. 222 207

Complete the third row of the table.

Verified step by step guidance

<insert step 1> Identify the given information for each column: the number of protons, neutrons, electrons, and mass number.

<insert step 2> Recall that the number of protons in a neutral atom is equal to the number of electrons.

<insert step 3> Use the mass number formula: Mass Number = Protons + Neutrons, to find the missing values.

<insert step 4> For the third column, calculate the number of protons by subtracting the number of neutrons from the mass number.

<insert step 5> Since the atom is neutral, the number of electrons will be equal to the number of protons calculated in the previous step.>

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Atomic Structure

Atoms consist of protons, neutrons, and electrons. Protons are positively charged particles found in the nucleus, while neutrons are neutral particles also located in the nucleus. Electrons are negatively charged and orbit the nucleus. The number of protons defines the element, while the total number of protons and neutrons gives the atomic mass.

Isotopes

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons. This results in different atomic masses for the isotopes. For example, Bromine-79 (79Br) has 35 protons and 44 neutrons, while another isotope may have a different neutron count, affecting its mass number.

Mass Number

The mass number of an atom is the sum of its protons and neutrons. It is a whole number that represents the total mass of the nucleus. In the context of the table, filling in the mass number requires adding the number of protons and neutrons for each atom, which helps in identifying the specific isotope and its properties.

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